<template>
	<view>
		<my-search @click="gotoSearch"></my-search>
		<view class="scroll-view-container">
			<scroll-view scroll-y="true" class="left-scroll-view" :style="{height:wh+'px'}">
				<block v-for="(item,i) in cateList" :key="i">
				  <view :class="['left-scroll-view-item',active === i ? 'active' : '' ]" @click="activeChange(i)">{{item.cat_name}}</view>
				</block>
	
		
			</scroll-view>
			
			<scroll-view scroll-y="true" :scroll-top="scrollTop" class="right-scroll-view" :style="{height:wh+'px'}">
				<view class="cate-lv2" v-for="(item2,i2) in cateLevel2" :key="i2">
					<view class="cate-lv2-title">
						/{{ item2.cat_name}}/
					</view>
					<view class="cate-lv3-list">
					<view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
						<image :src="item3.cat_icon.replace('dev','web')" ></image>
						<text>{{item3.cat_name}}</text>
					</view>
				</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				wh:0,
				cateList:[],
				active:0,
				cateLevel2:[],
				scrollTop:0
			}
		},
		methods: {
			async getcateList(){
				const {data:res} =await uni.$http.get('/api/public/v1/categories')
				if (res.meta.status !== 200) return uni.$showMsg()
				this.cateList = res.message
				this.cateLevel2 = res.message[0].children
			},
			activeChange(i) {
				this.active = i
				this.cateLevel2 = this.cateList[i].children
				this.scrollTop = Math.random()
			},
			gotoGoodsList(item){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list/?cid='+item.cat_id
				})
			},
			gotoSearch(){
				uni.navigateTo({
					url:"/subpkg/search/search"
				})
			}
		},
		onLoad() {
			const sysInfo = uni.getSystemInfoSync()
			this.wh =sysInfo.windowHeight-50
			this.getcateList()
		}
	}
</script>

<style lang="scss">
.scroll-view-container {
	display: flex;
}
.left-scroll-view {
	width: 120px;
	
	.left-scroll-view-item {
		line-height: 60px;
		background-color: #f7f7f7;
		text-align: center;
		font-size: 12px;
		
		&.active{
			background-color: #ffffff;
			position: relative;
		
		
		&::before {
			content: ' ';
			display: block;
			width: 3px;
			height: 30px;
			background-color: #c00000;
			position: absolute;
			left: 0;
			top: 50%;
			transform: translateY(-50%);
		  }
		}
	}
}
.cate-lv2-title {
	font-size: 12px;
	font-weight: 800;
	text-align: center;
	padding: 15px 0;
}
.cate-lv3-list{
	display: flex;
	flex-wrap: wrap;
	.cate-lv3-item {
		display: flex;
		width: 33.33%;
		flex-direction: column;
		align-items: center;
		
		margin-bottom: 10px;
	}
	image{
		width: 60px;
		height: 60px;
	}
	text {
		font-size: 12px
	}
}
</style>
